[POT] Change python version to 3.8+ (#20071)

* Change python version to 3.8+

* Fix tests

tools/pot/openvino/tools/pot/algorithms/quantization/optimization/algorithm.py

@@ -33,7 +33,7 @@ except ImportError:
         'Nevergrad package could not be imported. If you are planning to use '
         'any hyperparameter optimization algo, consider installing it '
         'using pip. This implies advanced usage of the tool. '
-        'Note that nevergrad is compatible only with Python 3.7+'
+        'Note that nevergrad is compatible only with Python 3.8+'
     )
 
 try:

tools/pot/setup.py

@@ -66,8 +66,7 @@ if '--install-dev-extras' in sys.argv:
 
 INSTALL_REQUIRES = [
     "numpy>=1.16.6",
-    "scipy~=1.7; python_version == '3.7'",
-    "scipy>=1.8; python_version >= '3.8'",
+    "scipy>=1.8",
     "jstyleson>=0.0.2",
     "addict>=2.4.0",
     "networkx<=3.1",
@@ -89,10 +88,10 @@ DEPENDENCY_LINKS = []
 
 python_version = sys.version_info[:2]
 if python_version[0] < 3:
-    print('Only Python >= 3.7 is supported by POT/OV')
+    print('Only Python >= 3.8 is supported by POT/OV')
     sys.exit(0)
-elif python_version[1] < 7:
-    print('Only Python >= 3.7 is supported by POT/OV')
+elif python_version[1] < 8:
+    print('Only Python >= 3.8 is supported by POT/OV')
     sys.exit(0)
 
 

tools/pot/tests/data/reference_models/resnet_example_RangeSupervision_pytorch.xml

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:8c20a1ec0c1046013c163a6ab782e27938a0ad7d65eaf09e1ff8ecc991fe57e9
+oid sha256:eadb5fd2ef0c5693b33a190d2370c14534784c99f6f5900071d87cd40652ff6d
 size 52734

tools/pot/tests/data/reference_models/resnet_example_range_supervision_pytorch.xml

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:0c423d68b3fe0d72724006f5cc79e03530ed2fd256a180fcdddf78d3c38bacce
+oid sha256:3d26e5cc565479c05b57f645138ae8d6b1048663236818a5aa60105d978002af
 size 52734

tools/pot/tests/utils/command.py

@@ -22,9 +22,9 @@ class Command:
         # set system/version dependent 'start_new_session' analogs
         if sys.platform == 'win32':
             self.kwargs.update(creationflags=subprocess.CREATE_NEW_PROCESS_GROUP)
-        elif sys.version_info < (3, 7):  # assume posix
+        elif sys.version_info < (3, 8):  # assume posix
             self.kwargs.update(preexec_fn=os.setsid)
-        else:  # Python 3.7+ and Unix
+        else:  # Python 3.8+ and Unix
             self.kwargs.update(start_new_session=True)
 
     def kill_process_tree(self, pid):